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What this article shares with you is about how to create an image warehouse in Docker. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article.

Register and log in

Execute docker login in the command line interface and enter the user name and password to log in to Docker hub in the command line interface, or you can log in through docker logout

Pull the image

You can use the docker search command to find the image in the official repository and use the docker pull command to download it locally

Push image

Users can also use the docker push command to push their images to docker hub after logging in.

Example

# named Image docker tag fce289e99eb9 xufengstudy/hello-world:latest# push Image docker push xufengstudy/hello-world:latest

Private warehouse

Once you have created a private repository, you can use docker tag to mark an image and push it to the repository

You can run it by obtaining an official registry image. By default, the repository is created in the container's / var/lib/registry directory. The image file can be stored locally in the specified path through the-v parameter.

Docker run-- name registry-d-p 5000 restart=always-v / Users/zhangxufeng/docker-registry:/var/lib/registry registry

Sometimes it may be inconvenient to use a public repository such as docker hub, and users can create a local warehouse for private use. For example, an image based on an internal project in the company. Docker-registry is an official tool that can be used to build private image repositories.

Install and run docker-registry

Upload, search and download images in a private repository

Use docker tag to mark the session-web:latest image as 127.0.0.1:5000/session-web:latest in docker tag IMAGE [: tag] [REGISTRY_HOST [: REGISTRY_PORT] /] REPOSITORY [: TAG]

Docker tag session-web:latest 127.0.0.1:5000/session-web:latest

Upload an image of a tag using docker push

Docker push 127.0.0.1:5000/session-web:latest

Use curl to view images in the repository

Curl 127.0.0.1:5000/v2/_catalog

If you can see {"repositories": ["session-web"]}, the image has been uploaded successfully.

Delete the existing image before trying to download the image from the private repository

Docker image rm 127.0.0.1:5000/session-web:latestdocker pull 127.0.0.1:5000/session-web:latest

Matters needing attention

If you don't want to use 127.0.0.1 Grou5000 as the warehouse address, for example, you want other hosts on this network segment to push the image to your private repository. You will have to use an intranet address such as 192.168.100.100purl 5000 as a private repository address, and you will find that the image cannot be pushed successfully. This is because docker does not allow non-HTTPS push of images by default. We can remove this restriction through the configuration option of docker.

For systems that use systemd, you need to write the following in / etc/docker/daemon.json (Windows and Mac are set in the settings):

{"regsitry-mirror": ["https://registry.docker-cn.com"]," insecure-registries ": [" 192.168.100.100Suzhou 5000 "]}

The above is how to create an image warehouse in Docker. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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